aluminous A-type graniteYangshan plutonradiogenic Ca-Nd isotopesridge subductiongeochemistryThe Early Cretaceous aluminous A-type granites in the Lower Yangtze River belt(LYRB)can provide important insights into the Mesozoic magmatism in eastern China,but their origin remains highly controversial.In this ...
A-Type Granite Belts of Two Chemical Subgroups in Central Eastern China: Indication of Ridge Subduction. Lithos, 150: 26–36. https://doi.org/10.1016/j.lithos.2011.09.021 Article Google Scholar Li, H., Ling, M. X., Ding, X., et al., 2014. The Geochemical Characteristics of Haiyang...
A considerable number of A-type granite intrusions, commonly associated with other felsic-mafic components of the bimodal magmatism comprising anorthosites, gabbros, ferrodioritic dikes, charnockites, mangerites, etc., are present in the Laurentia and Baltica cratons (e.g. North America, Greenland...
7 Nb - Y - Ce triangular plot ( a) of A - type granite ( after Ebyꎬ 1992) and ( Y + Nb) - Rb ( b) discrimination diagrams of tectonic setting ( Pearce et al. ꎬ1984) Syn - COLG - 同碰撞花岗岩ꎻVAG - 火山弧花岗岩ꎻORG - 洋中脊花岗岩ꎻWPG - 板内花岗岩 Syn - ...
Recent studies recognize that substantial volume of crust of granitic composition is subducted during the assembly of supercontinents through arc subduction, sediment trapped subduction, and subduc- tion erosion. This TTG (tonalite-trondhjemite-granite) material is dragged down and is thought to ...
Emplacement age of the Tahe granite and its constraints on the tectonic nature of the Ergun block in the northern part of the Da Hinggan Range. Chin. Sci. Bull. 50, 2097-2105. [12] Ge, W.C., Wu, F.Y., Zhou, C.Y., Zhang, J.H., 2007. Porphyry Cu-Mo deposits in the ...
4 how their subduction-collision model probably would produce “hot oceanic crust” for another 40 m.y. until 605 Ma. They then regard the 676 ± 5 Ma age of a granite in the São Francisco basement to the north (Teixeira et al., 1997; see Fig. 2 for location) as a maximum age...
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The Longwangzhuang pluton is a typical example of Paleoproterozoic A-type granite intrusions at the southern margin of the North China Craton. This pluton is composed of arfvedsonite granite and minor aegirine–augite granites. Samples from both granite
Key words: Copper polymetallic deposit; skarn; aluminous A-type granite; zircon U–Pb age; geochemistry; Hf isotope; mineral exploration engineering; Tangge; Tibet Highlights:The discovery of Late Cretaceous aluminous A- type granite can not only greatly promote the exploration and prospecting of ...